| 摘要 |
<p>Provided is a battery pack including unit batteries arranged side-by-side, a substrate for electrically connecting the unit batteries to each other, a metal layer formed on a first side of the substrate and a protection circuit module that is electrically connected to the substrate, wherein the substrate comprises an area reduction portion of which an area is partially reduced with respect to the rest of the substrate, and the metal layer is formed to correspond to the area reduction portion.</p> |
